Synthesis of fe-doped CeO2nanorods by a widely applicable coprecipitation route

Zizi Wang, Ying Xin, Zhaoliang Zhang, Qian Li, Yihe Zhang, Li Min Zhou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

Fe-doped CeO2solid solution nanorods were successfully prepared via a simple coprecipitation method without templates/surfactants at ambient temperature and pressure. The single crystalline nanorod structure was preserved after calcination at higher temperatures. The formation of the nanorod morphology strongly depends on Fe contents. Beyond the solid solution limit, only nanoparticles were observed. The morphology was also affected by precipitation agents, temperatures and aging times. The formation of the nanorods originates from the intrinsic anisotropy of Ce hydroxide. The dissolution/ recrystallization mechanism was thus proposed, in which the coexistent ammonia and/or Fe act as the capping agents for the formation of nanorods. Simultaneously, the enrichment of Fe on the surface results in the nanorods with round shape and sharp tips. The element-capped concept for the formation of the nanorod morphology can be extended to Cr-doped CeO2.
Original languageEnglish
Pages (from-to)436-442
Number of pages7
JournalChemical Engineering Journal
Volume178
DOIs
Publication statusPublished - 15 Dec 2011

Keywords

  • Cerium oxide
  • Chromium
  • Coprecipitation
  • Iron
  • Nanorod

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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